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Right side heater vents stuck on high
2008 Mercury Mariner

Right side heater vents stuck on high

(2008 Mercury Mariner)
08 mercury mariner premier with climate control. right side only blows hot air, even when temp control is turned down. it will redirect to floor, vents or defrost and fan control works
What seems to make the problem better or worse? stuck on high all the time
How long have you had this problem? since last fall
Tags: mercury, mariner
1 answer & 0 comments
Popular Answer
on April 10, 2019
Hello, your vehicle is equipped with a “dual zone” climate control system, which allows you to have a different temperature, if desired, in the passenger side zone versus the driver’s side zone of the vehicle.

When one side will not adjust to the proper temperature, there is either a problem with the control mechanism, the motor that turns the doors behind the dash inside the ventilation system plenum which meters the temperature from hot to cold, or a problem with the actual doors or plenum. Testing will need to be performed to find out what has failed and how it can be repaired.
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General Diagnosis
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on April 10, 2019
Hello, your vehicle is equipped with a “dual zone” climate control system, which allows you to have a different temperature, if desired, in the passenger side zone versus the driver’s side zone of the vehicle.

When one side will not adjust to the proper temperature, there is either a problem with the control mechanism, the motor that turns the doors behind the dash inside the ventilation system plenum which meters the temperature from hot to cold, or a problem with the actual doors or plenum. Testing will need to be performed to find out what has failed and how it can be repaired.
Sign in to reply

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